We have not yet had a chance to use this on the ice for fishing, but my husband has charged it and turned it on just to check it out. He says it gets 'hot'. I'm sure that the cold days in the boat, late in the fall, or on the ice will be a little less cold on the hands any how. Can't wait to get out and put it to use. May have to get another one for myself - it can get pretty cold in a treestand, too!